Electrical apparatus.



Patented Sept. 8,1914

mom/Er WITNESSES YHE NORR'E N- RS CO.. PHOTD-LITHO., WASHINGTON. L C.

; nnrrnn s'ra'rns PATENT enrich.

HENRY E. REEVE, or NEW YORK, N. Y.

ELECTRICAL APPARATUS.

To all whom it may concern:

Be it known that I, HENRY E. Rnnvn, a

' citizen of the United States, and resident of New York, in the countyof Kings and State of New York, have invented certain new and usefulImprovements in Electrical Apparatus, of which the following is aspecification.

My invention relates particularly to a construction for affordin a gasand liquid tight connectionbetween a casing and a lever for transmittingmotion through a wall of the.

casing, as for instance, in the electric operating mechanism of myformer applications. In the said applications I have shown and describedin detail a construction in which the hermetically sealed casingcontains the parts to be protected and the liquid and gas tightconnection is effected by means of a suitable metallic diaphragm throughwhich the transmitting lever extends. One of the plates of thisdiaphragm is connected to the I transmitting lever and the other to awall of the casing having an opening through which the transmittinglever passes. I have found that the useful life of this diaphragmconstruction may be prolonged very greatly by aconstruction shown anddescribed-in de-' tail hereinafterl These improvements consist in theemployment of certain special bushings, flexible washers and collarswhere by the strain of flexure of the diaphragm so distributedthroughout the diaphragm as to greatly reduce any tendency to fracturefrom prolonged or repeated vibrations.

Figure 1, is a front view of an electrical bell construction embodyinigthe improvement-s of my invention, the front plate or cover of thecasing being removed. Fig. 2,

is an enlarged cross sectional view. of the diaphragm embodyingtheimprovements of the present invention. Fig. 3, is a plan'view of thediaphragm with the collar, bushing and transmitting lever in section.Fig. 4, is a dropped perspective view showing the parts of the diaphragmand the parts for connecting it to the casing and transmitting lever. V

The casing 1 of any suitable shape and character, incloses such parts asit is desiredv to protect, for instance, the electromagnet 2, thearmature 3 and the vibrator contacts 4 and 5 which are operated in asuitable manner by the electromagnet.

The bell or gong top 6 is mounted outside the casing and is struck bymeans of a ham- Specification of Letters Patent.

Patented Sept. 8, 1914.

Application filed February 17, 19 11. Serial No. 609,193.

mer or striker 7. The lever 8 passing through an opening in one wall ofthe casmg is connected at its inner end to the annature 3 and its outerend to thestriker 7. The water and gas tight connection between thetransmitting lever and the. casing is effected by means ofithe diaphragm9. While the diaphragm 9 is capable of supporting the transmitting leverand the attached parts I preferv to provide additional guiding andsupporting means as for instance, the pivots 10 which constrain thediaphragm and lever 8 to vibrations in a single plane. This diaphragm.is formed of thin metal plates 14 and 15 preferably of oval outline asshown in Fig. 3 united by a tight joint at their periphery. The upperplate 14 is secured to the bush1ng-16 to which the lever 8 is secured.The inner end of the bushing 16 has a flange 17 Between theflange 17 andthe plate 14 I have arranged a flexible metal washer18. A similarflexible metal washer 19 is mounted above the plate 14. The colhr 20fits on the bushing 16 above the washer 19 and the parts are drawn andheld together in a suitable manner, for instance, by turning over theouter upper edge of the bushing 16 as at 21. The metal plate 15 issecured to the casing 1 in a similar manner. A hollow bushing 22 throughwhich the lever 8 passes freely has aflange 23. flexible metal washer 24is located between the flange 23 and the plate 15. A similar flexiblewasher 25 is arranged below the plate 15 and the parts are clampedtogether by means ofa collar 26 which fits onthe bushing 22 being drawnand held together.

for instance, by turning over the lower outer irim of the bushing 22as-at 27. I prefer to coat thelower and upper surfaces respectively ofthewashers 19 and 18 by suitable paint or enamel so as to aflorda betterconnection and insure a tighter joint. Simi larly the lower and uppersurfaces of the The.

but it should be understood that the method of attaching the lever 8 toit is immaterial as is also the distance which the lever extends intoit. It may even be closed on the upper end as shown in Fig. 4.

What I claim is 1. In a device of the character described, a diaphragmconsisting of two flexible plates connected at their peripheries,flanged bushings passing through said plates and having their flangesbetween said plates, flexible washers on said bushings between saidflanges and said plates, flexible washers on said bushings outside ofsaid plates and collars clamping the plates betwen the flexible washersagainst the flanges of the bushings, said washers extendingsubstantially beyond the edges of the flanges andcollars respectivelyand a transmitting lever secured to one bushing and passing through theother bushin 2. In a construction of the character de scribed, abushing, a transmitting lever passing therethrough, a flexible metallicplate, a flange on said bushing, flexible washers arranged on oppositesides oi. the plate and a collar on said bushing for clamping saidflexible washers and plate against said flange, said washers extending asubstantial distance beyond said flange and collar respectively. i

-3. A construction of the character described comprising a casinghavingan opening, a transmitting lever' passing through said opening in saidcasing, a flexible metal plate means for connecting its periphery tosaid casing and means foroonnecting the cen tral portion of saidv plateto said transmitting lever, said means including flexible washers onboth sides of said plate and means for clampingsaid washers and plate,

said washers extending outward a substair tial distance beyond theclamping means.

4. In apparatus of the character deflexible metallic washers lying flatagainst the opposite faces of the diaphragm and interposed betweenthe'said rigid clamping means and the respective faces of the diaphragm,said flexible washers extending,

substantially beyond the rigid clamping means to elastically support thediaphragm and thereby upon vibration of the lever to reduce thedeflection of the diaphragm from the plane of the'rigid clamping means.

6. The combination with a casing and a vibrating lever passingtherethrough, of a flexible connection between the lever and casingcomprising, an elastic metallic diaphragm of oval shape arrangedtovibrate about a line corresponding to the shorter axis of the oval,means for connecting the:

periphery of said diaphragm with the casing, spring metal washers ofoval shape applied to the opposite faces of the diaphragm with the axesof such washers alined with the corresponding axes of the diaphragm andrigid clamping means carried by the lever securing the spring Washers inflat engagementwith the facesof the diaphragm,

the said washers projecting beyond the rigid clamping. means to therebyreduce the degree of deflection ofthe diaphragm from the. v

plane of the rigid clamping means when the lever is vlbrated.

HENRY E. REEVE.

Witnesses J. S. ALLYN, E. BnAnroRn.

Copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents,

Washington, D; C.

